<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h2>index 页面</h2>


<form method="post" action="/convertUser">
    <input type="text" value="张三,123" name="user">
    <input type="submit" value="提交">

</form>
</body>
</html>